i heard the president talk about this and his own children, about the civil rights movement in the united states. those who don't remember, what do they take away? the memory of the man lives on, the legacy of the man lives on. how does the world, the education system in south africa. how do educators around the world. what will children learn of nelson mandela? look at many of the young faces when you were playing the music beforehand. many of those who are performing weren't alive in the '80s during the struggle. they weren't there when mandela was freed or the free elections in the early '90s. it's a fascinating question for me, when you say farewell and pay tribute to one of the greats of history, today all the tributes will be made, 10 and 20 years from now, what will the young people take from it? >> it's interesting to that point, john, during the president's remarks, he mentioned what is probably nelson mandela's most famous speech, no matter when you were born. during the trial that wound up sending him away on his sentence, he had so many famous lines. it was notable because it